summaryrefslogtreecommitdiffstats
path: root/WebCore/websockets/WorkerThreadableWebSocketChannel.h
blob: 366e4fa7c0d5f2ae4b38fa0183a77e68626a32e7 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
/*
 * Copyright (C) 2009, 2010 Google Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef WorkerThreadableWebSocketChannel_h
#define WorkerThreadableWebSocketChannel_h

#if ENABLE(WEB_SOCKETS) && ENABLE(WORKERS)

#include "PlatformString.h"
#include "ThreadableWebSocketChannel.h"
#include "WebSocketChannelClient.h"

#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/Threading.h>

namespace WebCore {

class KURL;
class ScriptExecutionContext;
class ThreadableWebSocketChannelClientWrapper;
class WorkerContext;
class WorkerLoaderProxy;
class WorkerRunLoop;

class WorkerThreadableWebSocketChannel : public RefCounted<WorkerThreadableWebSocketChannel>, public ThreadableWebSocketChannel {
public:
    static PassRefPtr<ThreadableWebSocketChannel> create(WorkerContext* workerContext, WebSocketChannelClient* client, const String& taskMode, const KURL& url, const String& protocol)
    {
        return adoptRef(new WorkerThreadableWebSocketChannel(workerContext, client, taskMode, url, protocol));
    }
    virtual ~WorkerThreadableWebSocketChannel();

    virtual void connect();
    virtual bool send(const String& message);
    virtual unsigned long bufferedAmount() const;
    virtual void close();
    virtual void disconnect(); // Will suppress didClose().
    virtual void suspend();
    virtual void resume();

    using RefCounted<WorkerThreadableWebSocketChannel>::ref;
    using RefCounted<WorkerThreadableWebSocketChannel>::deref;

protected:
    virtual void refThreadableWebSocketChannel() { ref(); }
    virtual void derefThreadableWebSocketChannel() { deref(); }

private:
    // Generated by the bridge.  The Peer and its bridge should have identical
    // lifetimes.
    class Peer : public WebSocketChannelClient, public Noncopyable {
    public:
        static Peer* create(RefPtr<ThreadableWebSocketChannelClientWrapper> clientWrapper, WorkerLoaderProxy& loaderProxy, ScriptExecutionContext* context, const String& taskMode, const KURL& url, const String& protocol)
        {
            return new Peer(clientWrapper, loaderProxy, context, taskMode, url, protocol);
        }
        ~Peer();

        void connect();
        void send(const String& message);
        void bufferedAmount();
        void close();
        void disconnect();
        void suspend();
        void resume();

        virtual void didConnect();
        virtual void didReceiveMessage(const String& message);
        virtual void didClose(unsigned long unhandledBufferedAmount);

    private:
        Peer(RefPtr<ThreadableWebSocketChannelClientWrapper>, WorkerLoaderProxy&, ScriptExecutionContext*, const String& taskMode, const KURL&, const String& protocol);

        RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
        WorkerLoaderProxy& m_loaderProxy;
        RefPtr<ThreadableWebSocketChannel> m_mainWebSocketChannel;
        String m_taskMode;
    };

    // Bridge for Peer.  Running on the worker thread.
    class Bridge : public RefCounted<Bridge> {
    public:
        static PassRefPtr<Bridge> create(PassRefPtr<ThreadableWebSocketChannelClientWrapper> workerClientWrapper, PassRefPtr<WorkerContext> workerContext, const String& taskMode, const KURL& url, const String& protocol)
        {
            return adoptRef(new Bridge(workerClientWrapper, workerContext, taskMode, url, protocol));
        }
        ~Bridge();
        void connect();
        bool send(const String& message);
        unsigned long bufferedAmount();
        void close();
        void disconnect();
        void suspend();
        void resume();

        using RefCounted<Bridge>::ref;
        using RefCounted<Bridge>::deref;

    private:
        Bridge(PassRefPtr<ThreadableWebSocketChannelClientWrapper>, PassRefPtr<WorkerContext>, const String& taskMode, const KURL&, const String& protocol);

        static void setWebSocketChannel(ScriptExecutionContext*, Bridge* thisPtr, Peer*, RefPtr<ThreadableWebSocketChannelClientWrapper>);

        // Executed on the main thread to create a Peer for this bridge.
        static void mainThreadCreateWebSocketChannel(ScriptExecutionContext*, Bridge* thisPtr, RefPtr<ThreadableWebSocketChannelClientWrapper>, const String& taskMode, const KURL&, const String& protocol);

        // Executed on the worker context's thread.
        void clearClientWrapper();

        void setMethodNotCompleted();
        void waitForMethodCompletion();

        RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
        RefPtr<WorkerContext> m_workerContext;
        WorkerLoaderProxy& m_loaderProxy;
        String m_taskMode;
        Peer* m_peer;
    };

    WorkerThreadableWebSocketChannel(WorkerContext*, WebSocketChannelClient*, const String& taskMode, const KURL&, const String& protocol);

    static void mainThreadConnect(ScriptExecutionContext*, Peer*);
    static void mainThreadSend(ScriptExecutionContext*, Peer*, const String& message);
    static void mainThreadBufferedAmount(ScriptExecutionContext*, Peer*);
    static void mainThreadClose(ScriptExecutionContext*, Peer*);
    static void mainThreadDestroy(ScriptExecutionContext*, Peer*);
    static void mainThreadSuspend(ScriptExecutionContext*, Peer*);
    static void mainThreadResume(ScriptExecutionContext*, Peer*);

    RefPtr<WorkerContext> m_workerContext;
    RefPtr<ThreadableWebSocketChannelClientWrapper> m_workerClientWrapper;
    RefPtr<Bridge> m_bridge;
};

} // namespace WebCore

#endif // ENABLE(WEB_SOCKETS)

#endif // WorkerThreadableWebSocketChannel_h